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Can you suggest a good bidding seq enough extras for 3C rebid by opener ?

#21 User is offline   TimG 

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Posted 2010-January-16, 09:25

gnasher, on Jan 16 2010, 09:39 AM, said:

I'd say it's 40% or a bit less.

Double dummy, it's about 77%. I wonder if anyone can run this through a single dummy engine to see how often the slam makes.

I do not mean to dispute gnasher's numbers, I simply find it an interesting example of the difference between double dummy and single dummy since it is generally considered that slams run pretty close to double dummy results.
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#22 User is offline   Jlall 

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Posted 2010-January-16, 11:23

TimG, on Jan 16 2010, 10:25 AM, said:

gnasher, on Jan 16 2010, 09:39 AM, said:

I'd say it's 40% or a bit less.

Double dummy, it's about 77%. I wonder if anyone can run this through a single dummy engine to see how often the slam makes.

I do not mean to dispute gnasher's numbers, I simply find it an interesting example of the difference between double dummy and single dummy since it is generally considered that slams run pretty close to double dummy results.

You have guesses in both black suits, so obviously on this type of hand double dummy will play much better than single dummy.
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#23 User is offline   gnasher 

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Posted 2010-January-16, 12:45

There's another line that I hadn't considered: win the diamond; throw a diamond on hearts; run ♣9, and then:

- If it wins, play three rounds of spades, ruffing. We can cope with ♣QJx and any 4-2 spade break, and also with West having ♣QJxx and 3 or 4 spades. (When West is 4-4 in the blacks, we have a crossruff ending in a trump coup.)

- If ♣9 loses and they force me, cash one more trump and then try to set the spades up with one ruff.

That's probably a bit worse with my first plan, but they seem fairly close.
... that would still not be conclusive proof, before someone wants to explain that to me as well as if I was a 5 year-old. - gwnn
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#24 User is offline   PaulLanier 

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Posted 2010-January-16, 14:39

I think the issue is letting partner know of extra game-going values in case slam is biddable.

Playing SAYC it ought to go: 1♠-3NT. 1♠-2♥ promises five hearts. I wouldn't quarrel with 2♥ though. If opener can rebid 3NT or 4♥ then that shows about 16 pts.

Playing 2/1 I would prefer 1♠-2♣-3♣-3♥. This shows extras and opener can take it from there.

Regardless I think the final contract ought to be 3NT. I do not think 6♣ is really biddable. But I would not argue too much if it went: 1♠-2♣-3♣-3♥-3♠*-6♣.

* extras, suggests 2 diamond losers.
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#25 User is offline   Winstonm 

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Posted 2010-January-16, 14:45

1S-2N (natural + GF)
3C-

From this point on there a numerous methods that may or may not get to the best contract.
"Injustice anywhere is a threat to justice everywhere."
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